A right triangle has legs of length 3 and 4. What is the length of the hypotenuse?
A5
B6
C7
D12
Answer & Solution
Correct answer: A. 5
Pythagorean theorem: c² = a² + b² = 9 + 16 = 25, so c = 5. The 3-4-5 right triangle is one of the most fundamental Pythagorean triples.
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